Creating New Session==========================<?php session_start();/*session is started if you don't write this line can't use $_Session global variable*/$_SESSION["newsession"]=$value;?>Getting Session==========================<?php session_start();/*session is started if you don't write this line can't use $_Session global variable*/$_SESSION["newsession"]=$value;/*session created*/echo $_SESSION["newsession"];/*session was getting*/?>Updating Session==========================<?php session_start();/*session is started if you don't write this line can't use $_Session global variable*/$_SESSION["newsession"]=$value;/*it is my new session*/$_SESSION["newsession"]=$updatedvalue;/*session updated*/?>Deleting Session==========================<?php session_start();/*session is started if you don't write this line can't use $_Session global variable*/$_SESSION["newsession"]=$value;unset($_SESSION["newsession"]);/*session deleted. if you try using this you've got an error*/?>

If you are using a session variable as a token to use as a handshake on next page load and the token updates on the new page load, but they mysteriously will not match and there is no obvious explanation. I had the following happen and maybe it will save you some time.

I was making a form that allowed an image upload and had an image tag ready to drop the src of the preview in after the file was chosen. But I had a preset src of "#"... this loaded the page a second time in the background and updated my token invisibly causing a broken handshake.

I was having troubles with session variables working in some environments and being seriously flaky in others. I was using $_SESSION as an array. It works properly when I used $_SESSION as pointers to arrays. As an example the following code works in some environments and not others.

The manual on $_SESSION says "An associative array". So an associative array is expected literally...? It does no one any good if this bit of important info about accessing and storing session data remains buried in manual comments.

Session variables with a single number will not work, however "1a" will work, as will "a1" and even a just single letter, for example "a" will also work.

I wrote a little page for controlling/manipulating the session. Obviously, never use this on a production server, but I use it on my localhost to assist me in checking and changing session values on the fly.

Again, it makes use of eval() and exposes the session, so never use this on a web server.

I have a weird problem, when using $_SESSION to store a nonce. My nonces never match.Maybe the PHP code is called twice (maybe is WP or maybe is the BROWSER) but Html is rendered with the first NONCE value, but as random nonce are created twice, returning PHP function (called by Javascript AJAX ) checks for the second value. As far , as I can not solve My solution is: always check first if the NONCE exist before creating a new random value for the nonce. This way nonce cannot change if PHP called twice.

"Warning: Unknown(): Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. "

The errormessage was quite unrelated and got me off-track. The real error was, $bar was not defined.

This is the code for session.php but it is not working properly. I have three field in my database log_id,user_email,user_pass. and when I want to login into my website it does not works. I've some issues with session creation.if you could help me please go ahed.<?php $dbhost = "localhost";$dbname = "new";$dbuser = "root";$dbpass = "";